Here is the definition of pet that will proceed forward in this debate

Pet: 1.
"a domestic or tamed animal or bird kept for companionship or pleasure and treated with care and affection.
"the pony was a family pet"
used as an affectionate form of address.
"don't cry, pet, it's all right"-Google

A "better pet" only needs to more appropriately fit the definition of a pet based on the nature of the pet in question. In this case I will argue that the nature of a dog makes a better pet than the nature of a cat based on this definition.

In the last round I stated: "A 'better pet' only needs to more appropriately fit the definition of a pet based on the nature of the pet in question. In this case I will argue that the nature of a dog makes a better pet than the nature of a cat based on this definition.

Again, the definition of pet that we're using is:

"a domestic or tamed animal or bird kept for companionship or pleasure and treated with care and affection.
"the pony was a family pet"
used as an affectionate form of address.
"don't cry, pet, it's all right"-Google

Let's break down the major segments of this definition into different parts (omitting the unnecessary examples):

A pet is:

1) a domestic/tamed animal or bird

2) kept for companionship or pleasure

3) treated with care and affection

4) used as an affectionate form of address

Now the question remains: does the nature of a dog or cat fit this criteria better? Let's take a second look.

1) a domestic/tamed animal or bird. Both a cat and a dog fit this description equally well.

2) kept for companionship or pleasure. Both a cat and dog can provide pleasure. But are cats and dogs equal companions?

Here's the Merriam-Webster definition of companion: 1 ":one that accompanies another :comrade, associate; also :one that keeps company with another."

You can teach a dog tricks by interacting with it and he'll give you feedback. Cats don't give you the time of day if you tried teaching it anything.

You can have your dog accompany you around town or on a jog around the neighborhood by putting a leash on it. Cats on a leash walk wherever they please.

You can play fetch with a dog and he'll return to your company. If you tried to play fetch with a cat it would probably attack whatever you threw then walk away.

Dogs are usually very excited to be in your company and walk up to you when you enter the room. Cats don't do this unless they're unusually happy or you have something they want.

These are examples showing why dogs are a better candidate than cats for a better companion.

3) treated with care and affection. Both cats and dogs are equally capable of this

4) used as an affectionate form of address. Both cats and dogs are equally capable of this

This shows why the nature of dogs makes a better pet than the nature of cats according to this definition of pet. I've given numerous examples showing that dogs make better companions than cats. Over to you con!